Physical Simulation-Based Characterization of HAZ Properties in Steels. Part 2. Dual-Phase Steels

Gáspár, Marcell; Sisodia, Raghawendra P. S.; Dobosy, Ádám

doi:10.1007/s11223-019-00128-y

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…The investigation results published in this paper fit to a larger research topic, in which the focus is on changes of toughness in HAZ during welding [12][13][14][15][16][17][18][19][20]. The longterm aim of this research is the fracture mechanical analyses of HAZs created by physical simulation.…”

Section: Introductionmentioning

confidence: 82%

Fracture Mechanical Analysis of Gleeble Simulated Heat Affected Zones in High Strength Steels

Koncsik

Lukács

Nagy

2021

Period. Polytech. Mech. Eng.

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During the research work the fracture mechanical investigation of heat affected zones of thermomechanical rolled high strength steels (Voestalpine Alform 960M) were carried out. For production of appropriate heat affected zones Gleeble 3500 physical simulator was applied, with different heating cycles and specific cooling times. Following the simulation, fracture mechanical investigations were performed, in favor of determination crack tip opening displacement (CTOD or δ) values.

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Section: Introductionmentioning

confidence: 82%

Fracture Mechanical Analysis of Gleeble Simulated Heat Affected Zones in High Strength Steels

Koncsik

Lukács

Nagy

2021

Period. Polytech. Mech. Eng.

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“…Researchers also validated their simulated microstructure results by employing real hybrid laser-arc welding. Another study by Gáspár et al [26] studied HAZ hardening and softening of three different dual-phase steels used in the automotive industry. They simulated welding thermal cycles that may correspond to TIG welding of DP steels using a Gleeble 3500 thermomechanical simulator.…”

Section: Introductionmentioning

confidence: 99%

The effect of heat input in multi-pass GMAW of S960QL UHSS based on weaving and stringer bead procedure on microstructure and mechanical properties of HAZ

Mert,

Gurol,

Tumer

2023

Mater. Res. Express

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Quenched and tempered S960QL (yield strength ≥ 960 MPa) ultra-high strength steel (UHSS) thick plates were joined by multi-pass robotic gas metal arc welding (GMAW) using weaving and stringer bead techniques. The effects of microstructural changes in heat-affected zone (HAZ) of the joint on toughness and hardness were examined. Weaving and stringer bead techniques applied for the multi-pass welding procedure altered average peak temperatures and exposure time to those temperatures. Mechanical properties of HAZ were evaluated by utilizing notch impact and hardness tests, and these results were correlated with microstructural characterizations using optical and scanning electron microscopes. Prior austenite grain (PAG) coarsening occurred because of increased exposure time to peak temperature in coarse-grained HAZ (CGHAZ) of the W-5 (weaving pass) joint. CGHAZs at the face pass, which have not been subjected to a second thermal cycle, have the highest hardness in both joints. Although standard toughness requirements are met in both joints, since HAZ in the S-12 (stringer bead) joint is narrow compared with the one in the W-5 joint, impact toughness values were higher with the S-12 joint due to the locations of the notches of the impact specimens.

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“…determined by the t 8/5 time, [13,14,21,22] welding peak temperature, [23,24] and the chemical composition of steels. [15] The time t 8/5 includes the cooling time within the temperature range of 800-500 °C.…”

Section: Introductionmentioning

confidence: 99%

“…Welding process parameters and thermal cycles play a key role in the context of the microstructure of welded joints, [ 12–16 ] mechanical properties, especially fatigue, [ 17 ] residual stresses, [ 12 ] and distortion. [ 18 ] During welding of high‐strength martensitic or bainitic steels, the main problem concerns the irreversible changes in the original microstructure caused by the thermal welding cycles.…”

Section: Introductionmentioning

confidence: 99%

“…[ 19 ] Moreover, steels with a low M s temperature are also characterized by high welding residual stresses. [ 20 ] Structural changes in heat‐affected zones (HAZs) are mainly determined by the t 8/5 time, [ 13,14,21,22 ] welding peak temperature, [ 23,24 ] and the chemical composition of steels. [ 15 ] The time t 8/5 includes the cooling time within the temperature range of 800–500 °C.…”

Section: Introductionmentioning

confidence: 99%

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The Microstructure Prediction during the Welding Process of Fe–C–Si Steel Using Physical and Numerical Simulation: A Comparative Study

Królicka

Zalecki

Kuziak

et al. 2022

steel research int.

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Overall, medium‐carbon, multiphase steels subjected to welding processes can be described as difficult and require dedicated process conditions. In these investigations, an attempt is made to characterize the welding process of commercial 55Si7 steel with a high carbon equivalent (CE = 0.73). An experimental tungsten inert gas (TIG) welding process is performed by the use of preheating. Then, to understand and explain the processes during welding, a numerical (finite element method [FEM]) and physical (dilatometry) simulation is carried out. Measurement points located in the heat‐affected zone (HAZ) are selected based on the obtained data of thermal cycles. Significant differences in the results obtained with the three approaches are assessed and indicated. The cause of the discrepancies in the test results is also identified. The essence of the implementation of material data, which precisely defines the kinetics of phase transformation, is confirmed. A detailed analysis of the contribution of the phases is performed, together with their morphological assessment, as well as the hardness distributions are conscientiously compared. Moreover, it seems that the segregation of the chemical composition of austenite and the initial microstructure plays a crucial role in terms of the quality of the prediction.

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Physical Simulation-Based Characterization of HAZ Properties in Steels. Part 2. Dual-Phase Steels

Cited by 6 publications

References 13 publications

Fracture Mechanical Analysis of Gleeble Simulated Heat Affected Zones in High Strength Steels

Fracture Mechanical Analysis of Gleeble Simulated Heat Affected Zones in High Strength Steels

The effect of heat input in multi-pass GMAW of S960QL UHSS based on weaving and stringer bead procedure on microstructure and mechanical properties of HAZ

The Microstructure Prediction during the Welding Process of Fe–C–Si Steel Using Physical and Numerical Simulation: A Comparative Study

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